CANTON, Ohio – When you carry a burden, sometimes you hold on just a little longer. Former NFL quarterback James Harris lived that as a player in the 1970s. Harris, a Pro Bowler in 1976 with the Los Angeles Rams, was the first black man in the modern era to start an NFL regular-season game and the first to lead his team to the playoffs. Harris endured the sleights about lacking intelligence for the position. He sometimes reacted in anger. Mostly, he studied and studied. And studied some more. “You never wanted to give anybody even the slightest room to...